It hasn't exactly been easy to keep the good news under wraps. "I remember on one occasion in the early days [of my pregnancy] when it was still too soon to say anything, and I had a dreadful time at one job," she says, recalling morning sickness during the first trimester.

Settling down and starting a family has always been on the agenda for Kerr.

"My ideal situation would be to live on a farm in a solar-powered house with a hammock and a vegetable patch," she told Page Six Magazine in 2008. "When this is all over, that's where I'll be. I've always wanted kids, so someday, eventually, yes, it will happen."